diff options
Diffstat (limited to 'progs/perf/teximage.c')
| -rw-r--r-- | progs/perf/teximage.c | 210 |
1 files changed, 210 insertions, 0 deletions
diff --git a/progs/perf/teximage.c b/progs/perf/teximage.c new file mode 100644 index 00000000000..b6d4f644dec --- /dev/null +++ b/progs/perf/teximage.c @@ -0,0 +1,210 @@ +/*
+ * Copyright (C) 2009 VMware, Inc. All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * VMWARE BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/**
+ * Measure glTexSubImage2D rate
+ *
+ * Brian Paul
+ * 16 Sep 2009
+ */
+
+#include "glmain.h"
+#include "common.h"
+
+
+int WinWidth = 100, WinHeight = 100;
+
+static GLuint VBO;
+static GLuint TexObj = 0;
+static GLubyte *TexImage = NULL;
+static GLsizei TexSize;
+static GLenum TexSrcFormat, TexSrcType;
+
+static const GLboolean DrawPoint = GL_TRUE;
+static const GLboolean TexSubImage4 = GL_TRUE;
+
+struct vertex
+{
+ GLfloat x, y, s, t;
+};
+
+static const struct vertex vertices[1] = {
+ { 0.0, 0.0, 0.5, 0.5 },
+};
+
+
+#define VOFFSET(F) ((void *) offsetof(struct vertex, F))
+
+/** Called from test harness/main */
+void
+PerfInit(void)
+{
+ /* setup VBO w/ vertex data */
+ glGenBuffersARB(1, &VBO);
+ glBindBufferARB(GL_ARRAY_BUFFER_ARB, VBO);
+ glBufferDataARB(GL_ARRAY_BUFFER_ARB,
+ sizeof(vertices), vertices, GL_STATIC_DRAW_ARB);
+ glVertexPointer(2, GL_FLOAT, sizeof(struct vertex), VOFFSET(x));
+ glTexCoordPointer(2, GL_FLOAT, sizeof(struct vertex), VOFFSET(s));
+ glEnableClientState(GL_VERTEX_ARRAY);
+ glEnableClientState(GL_TEXTURE_COORD_ARRAY);
+
+ /* texture */
+ glGenTextures(1, &TexObj);
+ glBindTexture(GL_TEXTURE_2D, TexObj);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+ glEnable(GL_TEXTURE_2D);
+}
+
+
+static void
+UploadTexImage2D(unsigned count)
+{
+ unsigned i;
+ for (i = 0; i < count; i++) {
+ /* XXX is this equivalent to a glTexSubImage call since we're
+ * always specifying the same image size? That case isn't optimized
+ * in Mesa but may be optimized in other drivers. Note sure how
+ * much difference that might make.
+ */
+ glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA,
+ TexSize, TexSize, 0,
+ TexSrcFormat, TexSrcType, TexImage);
+ if (DrawPoint)
+ glDrawArrays(GL_POINTS, 0, 1);
+ }
+ glFinish();
+}
+
+
+static void
+UploadTexSubImage2D(unsigned count)
+{
+ unsigned i;
+ for (i = 0; i < count; i++) {
+ if (TexSubImage4) {
+ GLsizei halfSize = (TexSize == 1) ? 1 : TexSize / 2;
+ GLsizei halfPos = TexSize - halfSize;
+ /* do glTexSubImage2D in four pieces */
+ /* lower-left */
+ glPixelStorei(GL_UNPACK_ROW_LENGTH, TexSize);
+ glTexSubImage2D(GL_TEXTURE_2D, 0,
+ 0, 0, halfSize, halfSize,
+ TexSrcFormat, TexSrcType, TexImage);
+ /* lower-right */
+ glPixelStorei(GL_UNPACK_SKIP_PIXELS, halfPos);
+ glTexSubImage2D(GL_TEXTURE_2D, 0,
+ halfPos, 0, halfSize, halfSize,
+ TexSrcFormat, TexSrcType, TexImage);
+ /* upper-left */
+ glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0);
+ glPixelStorei(GL_UNPACK_SKIP_ROWS, halfPos);
+ glTexSubImage2D(GL_TEXTURE_2D, 0,
+ 0, halfPos, halfSize, halfSize,
+ TexSrcFormat, TexSrcType, TexImage);
+ /* upper-right */
+ glPixelStorei(GL_UNPACK_SKIP_PIXELS, halfPos);
+ glPixelStorei(GL_UNPACK_SKIP_ROWS, halfPos);
+ glTexSubImage2D(GL_TEXTURE_2D, 0,
+ halfPos, halfPos, halfSize, halfSize,
+ TexSrcFormat, TexSrcType, TexImage);
+ /* reset the unpacking state */
+ glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0);
+ glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0);
+ glPixelStorei(GL_UNPACK_SKIP_ROWS, 0);
+ }
+ else {
+ /* replace whole texture image at once */
+ glTexSubImage2D(GL_TEXTURE_2D, 0,
+ 0, 0, TexSize, TexSize,
+ TexSrcFormat, TexSrcType, TexImage);
+ }
+ if (DrawPoint)
+ glDrawArrays(GL_POINTS, 0, 1);
+ }
+ glFinish();
+}
+
+
+/* XXX any other formats to measure? */
+static const struct {
+ GLenum format, type;
+ const char *name;
+} SrcFormats[] = {
+ { GL_RGBA, GL_UNSIGNED_BYTE, "GL_RGBA/GLubyte" },
+ { GL_BGRA, GL_UNSIGNED_BYTE, "GL_BGRA/GLubyte" },
+ { 0, 0, NULL }
+};
+
+
+
+/** Called from test harness/main */
+void
+PerfDraw(void)
+{
+ GLint maxSize;
+ double rate;
+ GLint fmt, subImage;
+
+ glGetIntegerv(GL_MAX_TEXTURE_SIZE, &maxSize);
+
+ /* loop over source data formats */
+ for (fmt = 0; SrcFormats[fmt].format; fmt++) {
+ TexSrcFormat = SrcFormats[fmt].format;
+ TexSrcType = SrcFormats[fmt].type;
+
+ /* loop over glTexImage, glTexSubImage */
+ for (subImage = 0; subImage < 2; subImage++) {
+
+ /* loop over texture sizes */
+ for (TexSize = 16; TexSize <= maxSize; TexSize *= 2) {
+ GLint bytesPerImage;
+ double mbPerSec;
+
+ bytesPerImage = TexSize * TexSize * 4;
+ TexImage = malloc(bytesPerImage);
+
+ if (subImage) {
+ /* create initial, empty texture */
+ glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA,
+ TexSize, TexSize, 0,
+ TexSrcFormat, TexSrcType, NULL);
+ rate = PerfMeasureRate(UploadTexSubImage2D);
+ }
+ else {
+ rate = PerfMeasureRate(UploadTexImage2D);
+ }
+
+ mbPerSec = rate * bytesPerImage / (1024.0 * 1024.0);
+
+ printf(" glTex%sImage2D(%s %d x %d): "
+ "%.1f images/sec, %.1f MB/sec\n",
+ (subImage ? "Sub" : ""),
+ SrcFormats[fmt].name, TexSize, TexSize, rate, mbPerSec);
+
+ free(TexImage);
+ }
+ }
+ }
+
+ exit(0);
+}
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